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/* __sigset_t manipulators. Linux version.
Copyright (C) 1991-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#ifndef _SIGSETOPS_H
#define _SIGSETOPS_H 1
#include <signal.h>
/* Return a mask that includes the bit for SIG only. */
# define __sigmask(sig) \
(((unsigned long int) 1) << (((sig) - 1) % (8 * sizeof (unsigned long int))))
/* Return the word index for SIG. */
# define __sigword(sig) (((sig) - 1) / (8 * sizeof (unsigned long int)))
# define __sigemptyset(set) \
(__extension__ ({ \
int __cnt = _SIGSET_NWORDS; \
sigset_t *__set = (set); \
while (--__cnt >= 0) \
__set->__val[__cnt] = 0; \
(void)0; \
}))
# define __sigfillset(set) \
(__extension__ ({ \
int __cnt = _SIGSET_NWORDS; \
sigset_t *__set = (set); \
while (--__cnt >= 0) \
__set->__val[__cnt] = ~0UL; \
(void)0; \
}))
# define __sigisemptyset(set) \
(__extension__ ({ \
int __cnt = _SIGSET_NWORDS; \
const sigset_t *__set = (set); \
int __ret = __set->__val[--__cnt]; \
while (!__ret && --__cnt >= 0) \
__ret = __set->__val[__cnt]; \
__ret == 0; \
}))
# define __sigandset(dest, left, right) \
(__extension__ ({ \
int __cnt = _SIGSET_NWORDS; \
sigset_t *__dest = (dest); \
const sigset_t *__left = (left); \
const sigset_t *__right = (right); \
while (--__cnt >= 0) \
__dest->__val[__cnt] = (__left->__val[__cnt] \
& __right->__val[__cnt]); \
(void)0; \
}))
# define __sigorset(dest, left, right) \
(__extension__ ({ \
int __cnt = _SIGSET_NWORDS; \
sigset_t *__dest = (dest); \
const sigset_t *__left = (left); \
const sigset_t *__right = (right); \
while (--__cnt >= 0) \
__dest->__val[__cnt] = (__left->__val[__cnt] \
| __right->__val[__cnt]); \
(void)0; \
}))
/* These macros needn't check for a bogus signal number;
error checking is done in the non-__ versions. */
# define __sigismember(set, sig) \
(__extension__ ({ \
unsigned long int __mask = __sigmask (sig); \
unsigned long int __word = __sigword (sig); \
(set)->__val[__word] & __mask ? 1 : 0; \
}))
# define __sigaddset(set, sig) \
(__extension__ ({ \
unsigned long int __mask = __sigmask (sig); \
unsigned long int __word = __sigword (sig); \
(set)->__val[__word] |= __mask; \
(void)0; \
}))
# define __sigdelset(set, sig) \
(__extension__ ({ \
unsigned long int __mask = __sigmask (sig); \
unsigned long int __word = __sigword (sig); \
(set)->__val[__word] &= ~__mask; \
(void)0; \
}))
#endif /* bits/sigsetops.h */
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